Patents by Inventor Prashanth Akula

Prashanth Akula has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10750509
    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may group multiple carriers with transmission time intervals (TTIs) having different durations into different physical uplink control channel (PUCCH) groups. The UE may reserve power per each PUCCH group. Alternatively, the UE may reserve power per each TTI duration across the one or more PUCCH groups.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: August 18, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Prashanth Akula, Seyedkianoush Hosseini, Peter Gaal, Tingfang Ji, Young Geun Cho
  • Publication number: 20200221311
    Abstract: Certain aspects of the present disclosure provide techniques for handling collisions between PUSCH and sounding reference signal (SRS) on additional SRS symbols in an uplink subframe using carrier aggregation. The techniques provide rules that a user equipment (UE) may apply to decide if and when to drop or apply power scaling to SRS or PUSCH transmissions scheduled on overlapping time resources.
    Type: Application
    Filed: January 8, 2020
    Publication date: July 9, 2020
    Inventors: Le LIU, Alberto RICO ALVARINO, Alexandros MANOLAKOS, Prashanth AKULA, Supratik BHATTACHARJEE, Qiang SHEN
  • Patent number: 10554448
    Abstract: Methods, systems, and devices for wireless communication are described. Multiple transmission time intervals (TTIs) may be used for communications between a base station and user equipment (UE), where each TTI may have a data pattern scheduled by a base station. Each TTI may include respective symbol periods designated as reference or data symbol periods. In some examples, the UE may be configured to transmit a sounding reference signal (SRS) in a last symbol period of a TTI, and a base station may dynamically determine a data pattern for the TTI such that a temporally last symbol period is immediately preceded by a reference symbol period (e.g., based on the presence of the SRS). In such cases, the UE may configure a transient time within the preceding reference symbol period to avoid signal degradation of the SRS (or data transmitted within the same TTI).
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: February 4, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Prashanth Akula, Seyedkianoush Hosseini, Young Geun Cho
  • Patent number: 10484945
    Abstract: Some aspects described herein reduce the negative performance impact associated with the voltage droop of a user equipment (UE) battery. For example, aspects described herein may be used to configure a UE with a pattern that includes a battery recovery time period that prevents a battery voltage of the UE from falling below a critical threshold and/or reduces the likelihood of the battery voltage falling below the critical threshold. In this way, UE performance may be improved, battery performance may be improved, battery life may be extended, and/or the like.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: November 19, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Prashanth Akula, Alberto Rico Alvarino, Hao Xu, Xiao feng Wang, Umesh Phuyal, Kapil Bhattad, Wanshi Chen, Peter Gaal, Mungal Singh Dhanda
  • Publication number: 20190313431
    Abstract: Methods, systems, and devices for wireless communication are described that support time mask techniques for shortened transmission time intervals (sTTIs) that may enhance low latency communications. Time masks may be identified and applied for transmissions that use sTTIs, in a manner that provides increased portions of sTTI durations having higher transmission power, and thus increase the likelihood of successful reception of such transmissions at a receiver. In some cases, a transmitter, such as a user equipment (UE), may identify one or more sTTIs for transmissions of a first wireless service (e.g., an ultra-reliable low-latency communication (URLLC) service). An sTTI may be identified based on a duration of a TTI associated with the first wireless service being below a threshold duration (e.g., a TTI duration of less than 1 ms may be identified as an sTTI).
    Type: Application
    Filed: June 21, 2019
    Publication date: October 10, 2019
    Inventors: Prashanth Akula, Seyedkianoush Hosseini, Wanshi Chen, Amir Farajidana
  • Patent number: 10397886
    Abstract: Methods, systems, and devices for wireless communication are described. In some cases, a user equipment (UE) may be scheduled to transmit uplink signals on different carriers during transmission time intervals (TTIs) that have different durations. As such, a TTI on a first carrier (e.g., a reference carrier) may overlap with multiple shortened TTIs (sTTIs) on a second carrier (e.g., a non-reference carrier). Using the techniques described herein, the UE may select a calibration point (or a gain index) for uplink transmissions at the beginning of the TTI on the reference carrier based on an amount of power reserved for expected power increases during the TTI. As such, when the UE has to update its transmit power for an uplink transmission during an sTTI on the second carrier, the UE may apply a digital back-off from a power associated with the calibration point.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: August 27, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Prashanth Akula, Amir Farajidana, Seyedkianoush Hosseini
  • Patent number: 10368365
    Abstract: Methods, systems, and devices for wireless communication are described that support time mask techniques for shortened transmission time intervals (sTTIs) that may enhance low latency communications. Time masks may be identified and applied for transmissions that use sTTIs, in a manner that provides increased portions of sTTI durations having higher transmission power, and thus increase the likelihood of successful reception of such transmissions at a receiver. In some cases, a transmitter, such as a user equipment (UE), may identify one or more sTTIs for transmissions of a first wireless service (e.g., an ultra-reliable low-latency communication (URLLC) service). An sTTI may be identified based on a duration of a TTI associated with the first wireless service being below a threshold duration (e.g., a TTI duration of less than 1 ms may be identified as an sTTI).
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: July 30, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Prashanth Akula, Seyedkianoush Hosseini, Wanshi Chen, Amir Farajidana
  • Publication number: 20190052328
    Abstract: Certain aspects of the present disclosure relate to communication systems, and more particularly, to improving performance for sounding reference signal (SRS) antenna switching in carrier aggregation (CA). A method is provided, that may be performed by a user equipment (UE) for wireless communications. The method includes determining one or more band combinations that share an antenna switch and sending a list of one or more bands in the one or more band combinations to a base station (BS). The BS receives the list and schedules the UE based on the received list.
    Type: Application
    Filed: August 8, 2018
    Publication date: February 14, 2019
    Inventors: Prashanth AKULA, Alberto RICO ALVARINO, Aamod Dinkar KHANDEKAR, Helena Deirdre O'SHEA, Supratik BHATTACHARJEE
  • Publication number: 20190053242
    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may group multiple carriers with transmission time intervals (TTIs) having different durations into different physical uplink control channel (PUCCH) groups. The UE may reserve power per each PUCCH group. Alternatively, the UE may reserve power per each TTI duration across the one or more PUCCH groups.
    Type: Application
    Filed: June 22, 2018
    Publication date: February 14, 2019
    Inventors: Prashanth Akula, Seyedkianoush Hosseini, Peter Gaal, Tingfang Ji, Young Geun Cho
  • Publication number: 20190052483
    Abstract: Methods, systems, and devices for wireless communication are described. Multiple transmission time intervals (TTIs) may be used for communications between a base station and user equipment (UE), where each TTI may have a data pattern scheduled by a base station. Each TTI may include respective symbol periods designated as reference or data symbol periods. In some examples, the UE may be configured to transmit a sounding reference signal (SRS) in a last symbol period of a TTI, and a base station may dynamically determine a data pattern for the TTI such that a temporally last symbol period is immediately preceded by a reference symbol period (e.g., based on the presence of the SRS). In such cases, the UE may configure a transient time within the preceding reference symbol period to avoid signal degradation of the SRS (or data transmitted within the same TTI).
    Type: Application
    Filed: August 8, 2018
    Publication date: February 14, 2019
    Inventors: Prashanth Akula, Seyedkianoush Hosseini, Young Geun Cho
  • Publication number: 20190007910
    Abstract: Methods, systems, and devices for wireless communication are described. In some cases, a user equipment (UE) may be scheduled to transmit uplink signals on different carriers during transmission time intervals (TTIs) that have different durations. As such, a TTI on a first carrier (e.g., a reference carrier) may overlap with multiple shortened TTIs (sTTIs) on a second carrier (e.g., a non-reference carrier). Using the techniques described herein, the UE may select a calibration point (or a gain index) for uplink transmissions at the beginning of the TTI on the reference carrier based on an amount of power reserved for expected power increases during the TTI. As such, when the UE has to update its transmit power for an uplink transmission during an sTTI on the second carrier, the UE may apply a digital back-off from a power associated with the calibration point.
    Type: Application
    Filed: June 26, 2018
    Publication date: January 3, 2019
    Inventors: Prashanth Akula, Amir Farajidana, Seyedkianoush Hosseini
  • Patent number: 10149276
    Abstract: Various embodiments include methods for managing antennas on an aerial robotic vehicle used for wireless communications. A processor may receive position information identifying a location of the aerial robotic vehicle, determine whether to switch from using a first antenna to using a second antenna for active communications of the aerial robotic vehicle based on the position information, and switch active communications from using the first antenna to using the second antenna in response to determining that active communications of the aerial robotic vehicle should switch from using the first antenna to using the second antenna. The processor may make the determination using information from a database, which may correlate aerial robotic vehicle position to whether to use a particular one of the first and second antennas for active communications. The determination may also be based on a comparison of signal qualities obtained by both antennas.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: December 4, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Prashanth Akula, Edward Harrison Teague
  • Publication number: 20180343612
    Abstract: Some aspects described herein reduce the negative performance impact associated with the voltage droop of a user equipment (UE) battery. For example, aspects described herein may be used to configure a UE with a pattern that includes a battery recovery time period that prevents a battery voltage of the UE from falling below a critical threshold and/or reduces the likelihood of the battery voltage falling below the critical threshold. In this way, UE performance may be improved, battery performance may be improved, battery life may be extended, and/or the like.
    Type: Application
    Filed: December 15, 2017
    Publication date: November 29, 2018
    Inventors: Prashanth AKULA, Alberto Rico Alvarino, Hao Xu, Xiao feng Wang, Umesh Phuyal, Kapil Bhattad, Wanshi Chen, Peter Gaal, Mungal Singh Dhanda
  • Publication number: 20180343624
    Abstract: Methods, systems, and devices for wireless communication are described. Some wireless communications systems may support communication between a user equipment (UE) and a base station on multiple carriers (i.e., carrier aggregation). In some cases, the UE may be scheduled to transmit uplink signals on the different component carriers during transmission time intervals (TTIs) that have different durations. In such cases, it may be appropriate for the UE to determine a maximum transmit power limit relating to the amount of power used for the uplink transmissions on the multiple carriers. As described herein, the UE may identify one of the component carriers as a reference component carrier, and the UE may determine the maximum transmit power limit for a duration of a TTI associated with the reference component carrier. The UE may then transmit on the multiple carriers in compliance with the maximum transmit power limit.
    Type: Application
    Filed: May 23, 2018
    Publication date: November 29, 2018
    Inventors: Prashanth Akula, Amir Farajidana, Seyedkianoush Hosseini
  • Publication number: 20180288731
    Abstract: Various embodiments include methods for managing antennas on an aerial robotic vehicle used for wireless communications. A processor may receive position information identifying a location of the aerial robotic vehicle, determine whether to switch from using a first antenna to using a second antenna for active communications of the aerial robotic vehicle based on the position information, and switch active communications from using the first antenna to using the second antenna in response to determining that active communications of the aerial robotic vehicle should switch from using the first antenna to using the second antenna. The processor may make the determination using information from a database, which may correlate aerial robotic vehicle position to whether to use a particular one of the first and second antennas for active communications. The determination may also be based on a comparison of signal qualities obtained by both antennas.
    Type: Application
    Filed: August 25, 2017
    Publication date: October 4, 2018
    Inventors: Prashanth Akula, Edward Harrison Teague
  • Publication number: 20180278393
    Abstract: Methods, systems, and devices for wireless communication are described that support dynamic transient period configurations for shortened transmission time intervals (sTTIs). A transient period may be configured within uplink transmissions such that protection is enabled for reference signals and data. For example, a user equipment (UE) may receive a resource grant from a base station for an uplink transmission, where the uplink transmission includes at least a first reference signal and a transmission time interval (TTI) that includes data and a second reference signal. The UE may identify a type of the reference signals and data, and may determine a priority based on the identified types of reference signals and data. The UE may then configure a transient period that overlaps with the first reference signal, the TTI, or both, based on the priority.
    Type: Application
    Filed: March 15, 2018
    Publication date: September 27, 2018
    Inventors: Prashanth Akula, Seyedkianoush Hosseini, Wanshi Chen, Amir Farajidana, Peter Gaal
  • Publication number: 20180220441
    Abstract: Methods, systems, and devices for wireless communication are described that support time mask techniques for shortened transmission time intervals (sTTIs) that may enhance low latency communications. Time masks may be identified and applied for transmissions that use sTTIs, in a manner that provides increased portions of sTTI durations having higher transmission power, and thus increase the likelihood of successful reception of such transmissions at a receiver. In some cases, a transmitter, such as a user equipment (UE), may identify one or more sTTIs for transmissions of a first wireless service (e.g., an ultra-reliable low-latency communication (URLLC) service). An sTTI may be identified based on a duration of a TTI associated with the first wireless service being below a threshold duration (e.g., a TTI duration of less than 1 ms may be identified as an sTTI).
    Type: Application
    Filed: January 31, 2018
    Publication date: August 2, 2018
    Inventors: Prashanth Akula, Seyedkianoush Hosseini, Wanshi Chen, Amir Farajidana
  • Patent number: 9450626
    Abstract: An apparatus including: at least one differential amplifier configured to amplify a radio frequency signal; a mixer configured to mix the radio frequency signal from the at least one differential amplifier with a local oscillator signal; and a low-pass filter coupled to the mixer, the low-pass filter includes a capacitor and at least one variable resistor configured to tune the low-pass filter.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: September 20, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Ojas Mahendra Choksi, Bin Fan, Bassel Hanafi, Hasnain Mohammedi Lakdawala, Prashanth Akula, Faramarz Sabouri
  • Publication number: 20160218852
    Abstract: An apparatus including: a first amplifier configured to amplify an input signal from multiple bands within a first frequency band class; and a plurality of downconverters coupled to the first amplifier, each downconverter configured to downconvert in one band of the multiple bands.
    Type: Application
    Filed: January 22, 2015
    Publication date: July 28, 2016
    Inventor: Prashanth Akula
  • Patent number: 9350392
    Abstract: An RFIC configuration for reduced antenna trace loss is disclosed. In an exemplary embodiment, an apparatus includes a primary RFIC and a secondary RFIC that is configured to receive analog signals from at least two antennas. The secondary RFIC is configured to process selected analog signals received from at least one antenna to generate an analog output that is input to the primary RFIC.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: May 24, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: I-Hsiang Lin, Zhijie Xiong, Seshagiri Krishnamoorthy, Jin-Su Ko, Prashanth Akula, Liang Zhao, Kevin Hsi Huai Wang, Desong Zhao